Alex Acosta's decision 17 years ago to rubber stamp a sweetheart deal with Jeffrey Epstein which allowed him to avoid a potential life sentence in prison is back in the spotlight.

The former US attorney for the Southern District of Florida will now be forced to answer questions about the controversial deal he struck with Epstein in 2008.

Acosta, who served as Labor Secretary in Trump's first administration and was a rising star before the scandal cut his career short, will appear before the House Oversight Committee on September 19 as part of a renewed investigation into Epstein's laundry list of crimes.

After mounting pressure from Democrats to subpoena Acosta, the 56-year-old has agreed to voluntarily appear before the panel.

He will be grilled about a sweetheart deal his office struck with Epstein amid an investigation into reports he was sex trafficking minors.